Improvement in smoke-drums



UNITED STATES JACOB BOWMAN, OF HARRISBURG, CANADA.

IMPROVEMENT IN SMOKE-DRUMS.

Specification forming part of Letters Patent No. 164,712, dated June 22,1875; application filed November 7, 1874.

' tion of the same.

My invention relates to improvements in smoke-drums for aiding inheatingapartments; and it consists of a novel construction of partswhereby the heat may be regulated in the drum, and whereby the lattercan be readily and conveniently cleansed of soot, &o., as will behereinafter fully described.

In the drawings, Figure 1 represents a full outside view of myinvention. Fig. 2 is a section through the center. Fig. 3 is a top view,showing the difierent angles at which the dampers are pivoted.

Letter A, Fig. 1, represents the outside of the drum, which isconstructed of sheetiron or .other metal. B is an axle, on which the topdamper D is fastened. E is the axle on which the middle damper D isfastened, and F the axle on which the bottom damper is attached. G isthe rod, attached to the bottom damper D, passing through a notch, (J,in the outer edge of the top damper, and a notch, C", out out of theedge of the middle damper, said notches being cut to allow the dampersto operate without hinderance from the rods. His the rod which operatesthe middle damper, and it passes through a notch, 0, cut in the topdamper, and I is the rod which operates the top damper. The rods areeach provided with about six small holes, a, which allow the pins Q tobe inserted in any one of said holes to hold the dampers in any positiondesired. The said pins Q may be attached to the drums by small chains R,fastened to eyes S at the top of the drum.

The drum is constructed in three parts, so that it can be taken apart,although it is not necessary to do so, to clean it.

The tops J of the connecting-rods G H I are screwed into them, and thedrum can be taken apart by removing the said tops and Fig. 1, a circularslide, L, being formed to opcrate inside of the drum, and cover the saidopenings partially or wholly, as the case may.

be. These openings serve two purposes, viz for removing soot from thedrum and also as passages for the admission of air when the drum is toohot, and as ventilators to draw ott' impure air from the room where thedrum is placed. The slide L is operated by the knob M, one movement ofWhich opens all the openings and. one closes them. A bottom plate, I, isattached to the said slide L, and is made to fit the concave bottom, theobject of which is as follows:

In the operation of cleaning the drum the first thing necessary is toshake the top damper D and place it perpendicular, when the soot willdrop from it to the middle one, which is likewise agitated and placed ina similar position; the lower one is then shaken in the same manner andthe ashes and soot thrgwn onto the bottom plate I, the drum is thentapped and the refuse can then be removed from the openings K withoutany trouble, the concave bottom, allowing the soot to fall readily tothe holes K. The bottom damper is nearly tight, only a small space beingleft between the edge of the damper and the sides of the drum when it isclosed-say, about onesixteenth of an inch-the middle and top damperbeing a little smaller, which leaves a little more space between theiredges aud the drum.

In operation, the smoke enters the drum through pipe N at the bottom. Asit ascends it comes in contact with the lower damper D, which divertsthe direct course. As it rises it comes incontact with the second damperD, which again diverts its course, and the top damper D performs thesame operation before the smoke escapes at the upper pipe T.

By the three dampers. placed at three angles to each other, the heat isretained in the drum to a very great extent, and the heat can be nicelyregulated by setting the dampers accordingly. In case of fire in thestope-pipes openings and with a pin for supporting it at its adjustedposition, substantially as described.

2. The combination, With the drum A, having the opening or openings K,of the bottom plate P and slide L, substantially as and for the purposedescribed. a

Hamilton, Ontario, October 28, 1874.

JACOB BOWMAN. In presence of-- WM. BRUCE, WM. B. BRUCE.

